diff --git a/plans/sketches/2026-09-18-names-lookup-flows.excalidraw b/plans/sketches/2026-09-18-names-lookup-flows.excalidraw
index f67948f1cc..4c31e896fb 100644
--- a/plans/sketches/2026-09-18-names-lookup-flows.excalidraw
+++ b/plans/sketches/2026-09-18-names-lookup-flows.excalidraw
@@ -16,11 +16,11 @@
     {"id":"te231930574466","type":"text","x":148.70184295573705,"y":446.294092339979,"width":32.26,"height":11.05,"strokeColor":"#007aff","fillStyle":"solid","roughness":0,"groupIds":["search"],"text":"Cancel","fontSize":9,"fontFamily":2,"index":"aP","strokeWidth":2,"lineHeight":1.25},
     {"id":"te146535658481","type":"text","x":-17.678157044262946,"y":511.844092339979,"width":115.33,"height":16.25,"strokeColor":"#1e1e1e","fillStyle":"solid","roughness":0,"groupIds":["search"],"text":"1a.  From search","fontSize":13,"fontFamily":2,"index":"aW","strokeWidth":2,"lineHeight":1.25},
     {"id":"te9023925185","type":"text","x":-17.678157044262946,"y":528.484092339979,"width":271.44,"height":68.75,"strokeColor":"#1e1e1e","fillStyle":"solid","roughness":0,"groupIds":["search"],"text":"Typing filters to the chats found by this name,\nand Connect to resolves it, both as today. A name\nyou have a chat for is resolved at most once a\nday; any other name on every tap, so an owner\ncan check a change.","fontSize":11,"fontFamily":2,"index":"aX","strokeWidth":2,"lineHeight":1.25},
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-    {"id":"te719661998578","type":"text","x":380.9107231737149,"y":315.34091014517986,"width":65.60348043082108,"height":11.942850579608494,"strokeColor":"#1e1e1e","fillStyle":"solid","roughness":0,"groupIds":["over","over-alert"],"text":"Name expired","fontSize":9.670324355958295,"fontFamily":2,"index":"b04","strokeWidth":2,"lineHeight":1.25},
-    {"id":"te79947822704","type":"text","x":347.76085128148986,"y":334.08199874702706,"width":133.25706962510532,"height":18.857132494118677,"strokeColor":"#1e1e1e","fillStyle":"solid","roughness":0,"groupIds":["over","over-alert"],"text":"bakery.simplex expired on 24 June\n2027. Its owner can renew it until 22","fontSize":7.736259484766636,"fontFamily":2,"index":"b05","strokeWidth":2,"lineHeight":1.25,"boundElements":[{"id":"ar909442594990","type":"arrow"}]},
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-    {"id":"te272497230298","type":"text","x":406.9529066643106,"y":384.46438864156977,"width":13.528783773985655,"height":10.057137330196626,"strokeColor":"#007aff","fillStyle":"solid","roughness":0,"groupIds":["over","over-alert"],"text":"OK","fontSize":7.736259484766636,"fontFamily":2,"index":"b08","strokeWidth":2,"lineHeight":1.25},
+    {"id":"re137734344677","type":"rectangle","x":316.13016684172646,"y":300.7900393691602,"width":175.26957589025088,"height":121.93603568633762,"strokeColor":"#1e1e1e","fillStyle":"solid","roughness":0,"groupIds":["over","over-alert"],"index":"b03","strokeWidth":2,"boundElements":[{"id":"ar625193548486","type":"arrow"},{"id":"ar909442594990","type":"arrow"}]},
+    {"id":"te719661998578","type":"text","x":368.18665936239535,"y":317.09831096098713,"width":74.68527140629419,"height":13.596154213852198,"strokeColor":"#1e1e1e","fillStyle":"solid","roughness":0,"groupIds":["over","over-alert"],"text":"Name expired","fontSize":11.009031752107044,"fontFamily":2,"index":"b04","strokeWidth":2,"lineHeight":1.25},
+    {"id":"te79947822704","type":"text","x":330.4476985161724,"y":338.4338144965705,"width":151.70445754403508,"height":21.467611916608732,"strokeColor":"#1e1e1e","fillStyle":"solid","roughness":0,"groupIds":["over","over-alert"],"text":"bakery.simplex expired on 24 June\n2027. Its owner can renew it until 22","fontSize":8.807225401685637,"fontFamily":2,"index":"b05","strokeWidth":2,"lineHeight":1.25,"boundElements":[{"id":"ar909442594990","type":"arrow"},{"id":"ar625193548486","type":"arrow"}]},
+    {"id":"te73085632245","type":"text","x":369.1224270613244,"y":362.4775398431723,"width":72.8247450401881,"height":10.733805958304366,"strokeColor":"#1e1e1e","fillStyle":"solid","roughness":0,"groupIds":["over","over-alert"],"text":"September 2027.","fontSize":8.807225401685635,"fontFamily":2,"index":"b07","strokeWidth":2,"lineHeight":1.25},
+    {"id":"te272497230298","type":"text","x":397.8339818708196,"y":395.79086992504824,"width":15.401635421197755,"height":11.449393022191323,"strokeColor":"#007aff","fillStyle":"solid","roughness":0,"groupIds":["over","over-alert"],"text":"OK","fontSize":8.807225401685635,"fontFamily":2,"index":"b08","strokeWidth":2,"lineHeight":1.25},
     {"id":"te309994649535","type":"text","x":306.2232070690634,"y":518.14,"width":236.12,"height":16.25,"strokeColor":"#1e1e1e","fillStyle":"solid","roughness":0,"groupIds":["over"],"text":"1c.  One alert over the found chats","fontSize":13,"fontFamily":2,"index":"b09","strokeWidth":2,"lineHeight":1.25},
     {"id":"te1071904305641","type":"text","x":306.2232070690634,"y":534.78,"width":268.15,"height":41.25,"strokeColor":"#1e1e1e","fillStyle":"solid","roughness":0,"groupIds":["over"],"text":"An actionable answer shows as one alert over the\nfiltered list. Dismissing it keeps the filter, so the\nchats found stay reachable.","fontSize":11,"fontFamily":2,"index":"b0A","strokeWidth":2,"lineHeight":1.25},
     {"id":"re649142848260","type":"rectangle","x":-19.776792930936608,"y":690,"width":209.04,"height":223.6,"strokeColor":"#1e1e1e","fillStyle":"solid","roughness":0,"groupIds":["message"],"index":"b0E","strokeWidth":2,"boundElements":[{"id":"ar507222825509","type":"arrow"},{"id":"ar11920695389","type":"arrow"}]},
@@ -215,11 +215,11 @@
     {"id":"te166687152361","type":"text","x":780,"y":1645.16,"width":197.96,"height":15,"strokeColor":"#1e1e1e","fillStyle":"solid","roughness":0,"text":"your address or channel claims it","fontSize":12,"fontFamily":2,"index":"b49","strokeWidth":2,"lineHeight":1.25},
     {"id":"te921930439761","type":"text","x":60,"y":2112.98,"width":1923.76,"height":27.5,"strokeColor":"#1e1e1e","fillStyle":"solid","roughness":0,"text":"Tags compare with today's app: today, changed, new. The two tinted bands split the answers by whether a chat for the name is on the device. Greyed: needs the wallet (simplex-chat#7475), which has not landed. Design document, not screenshots; alerts are drawn in the app's iOS idiom. A lookup returns the chats found on the device and, on Connect to or a\ntapped name, one resolution from the registry: always for a name with no local chat, and for a name with one only when its cached answer is older than a day or past its expiry; registration will always resolve. The API is in simplex-name-lookup-alert-diff.md. Registering, owning, recovering and giving names are separate flows.","fontSize":11,"fontFamily":2,"index":"b4A","strokeWidth":2,"lineHeight":1.25},
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diff --git a/plans/sketches/normalize-excalidraw.py b/plans/sketches/normalize-excalidraw.py
new file mode 100644
index 0000000000..ed3ea87a3c
--- /dev/null
+++ b/plans/sketches/normalize-excalidraw.py
@@ -0,0 +1,70 @@
+#!/usr/bin/env python3
+"""Shrink an .excalidraw file without changing what it renders.
+
+Excalidraw writes every element with its full schema, pretty-printed, so a
+354-element sketch costs 14k lines and ~90k tokens to read, and a one-field
+edit shows up as a 27-line diff block. This drops the fields Excalidraw
+re-derives on load and puts one element per line, so a changed element is
+one changed line.
+
+Kept on purpose: roughness, fillStyle, fontFamily and strokeColor, which
+this drawing sets away from the Excalidraw default; strokeWidth, whose
+default is 2, so dropping a 1 doubles the stroke; and lineHeight, which
+Excalidraw recomputes from font metrics when it is absent.
+
+Usage: normalize-excalidraw.py FILE...   rewrites each file in place
+
+Runs from .git/hooks/pre-commit on every staged .excalidraw file.
+"""
+import json
+import sys
+
+# Rewritten by Excalidraw on every save; carries no meaning for the drawing.
+DROP = {"version", "versionNonce", "updated", "seed", "baseline"}
+
+# Dropped only where the element already holds the default value.
+DEFAULT = {
+    "isDeleted": False, "locked": False, "link": None, "frameId": None,
+    "angle": 0, "opacity": 100, "strokeStyle": "solid",
+    "groupIds": [], "boundElements": [], "roundness": None,
+    "backgroundColor": "transparent", "autoResize": True,
+    "textAlign": "left", "verticalAlign": "top", "containerId": None,
+    "startBinding": None, "endBinding": None, "startArrowhead": None,
+    "endArrowhead": None, "lastCommittedPoint": None,
+    "startIsSpecial": None, "endIsSpecial": None,
+}
+
+
+def lean(element):
+    return {k: v for k, v in element.items()
+            if k not in DROP
+            and not (k in DEFAULT and v == DEFAULT[k])
+            and not (k == "originalText" and v == element.get("text"))}
+
+
+def dump(scene):
+    head = [f"{json.dumps(k)}: {json.dumps(v)}" for k, v in scene.items()
+            if k not in ("elements", "appState", "files")]
+    body = ",\n".join("    " + json.dumps(lean(e), separators=(",", ":"))
+                      for e in scene["elements"])
+    tail = [f"{json.dumps(k)}: {json.dumps(scene[k])}"
+            for k in ("appState", "files") if k in scene]
+    return ("{\n  " + ",\n  ".join(head) + ',\n  "elements": [\n' + body
+            + "\n  ],\n  " + ",\n  ".join(tail) + "\n}\n")
+
+
+def main(paths):
+    for path in paths:
+        with open(path) as f:
+            before = f.read()
+        text = dump(json.loads(before))
+        with open(path, "w") as f:
+            f.write(text)
+        print(f"{path}: {len(before)} -> {len(text)} bytes, "
+              f"{before.count(chr(10))} -> {text.count(chr(10))} lines")
+
+
+if __name__ == "__main__":
+    if len(sys.argv) < 2:
+        sys.exit(__doc__)
+    main(sys.argv[1:])